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问： This increases the body's hemoglobin count, thereby increasing the capacity for oxygen delivery and raising the level of endurance. 请问句中 thereby + -ing 是什 么结构，在句中起什么作用？ 答 : 这是一个副词 thereby + 现在分词 结构，在句中作结果状语。这个句子的意思是：这 种方法能增加体内的血红蛋白的数量，从而增加血液的输氧能力并提高耐力水平。 我们都知道，两个句子如果是因果关系，常用 thus、therefore、hence、thereby 等承联， 此时两个句子的主语为不同的主语。如： The cost of transport is a major expense for an industry. Therefore, factory location is an important consideration. （也可用 thus, hence, thereby） 运输费用是一个行业的主要开支。因此，工厂选址是一个重要的考虑因素。 ● 如果两个句子的主语同一主语，可用 and thus/therefore/hence/thereby 连接一个省 略主语的分句。如： A firm might sometimes sell at a loss to drive a competitor out of business, and thus (it) increases its market power. （it 指 a firm, 因为同一主语自然省略） 公司有时会通过亏本出售来将对手挤垮，从而提高其市场地位。 ● 如果两个句子的主语为同一主语，还可用 thus/thereby ＋ -ing （现在分词）短语， 作结果状语，前面句子表示原因，后面的分词短语表示结果。（习惯上不用 therefore 和 hence，用 thus 或 thereby）因此上面句子也可以改成： A firm might sometimes sell at a loss to drive a competitor out of business, thus increasing its market power. 公司有时会通过亏本出售来将对手挤垮，从而提高其市场地位。 更多例句 In this way, advertising enhances information flows between traders, and thus strengthens competitive market forces. In this way, advertising enhances information flows between traders, thus strengthening competitive market forces. 这样，广告增进了交易人之间的信息交流，由此加强了市场的竞争力。 He redesigned the process, and thereby saved the company thousands of dollars. He redesigned the process, thus thereby the company thousands of dollars. 他重新设计了流程，从而为公司节省了数千美元。 —————— Recently we have employed a new technique in the production, thus reducing the cost. 最近我们在生产中采用了一项新技术，降低了生产成本。 This enables the oceans to absorb and store vast quantities of heat, thus often preventing climatic extremes. 这使海洋能吸收和储存大量的热量,因此经常防止出现酷冷酷热的气候。 The economy is bad right now, thus dropping the value of my portfolio. 现在经济不景气，因而降低了我的证券投资的价值。 The rivet contracts as it cools, thereby drawing the plates together. 铆钉冷却后会收缩，因而将板块紧固在一起。 Diets that are high in saturated fat clog up our arteries, thereby reducing the blood flow to our hearts and brains. (Cambridge) 高饱和脂肪和高胆固醇的饮食容易阻塞我们的动脉，从而减少向心脏和大脑的供血。 Innovation and improvement in these industries will also lead to better service delivery and greater consumer choice, thereby promoting growth and creating new jobs. 这些行业本身不断创新，努力求进，亦有助改善服务，为消费者提供更多选择，从而推动行 业的发展，创造更多就业机会。 |
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